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IR light supplement?

indagroove

Well-known member
Veteran
And for some of us that is the great quandary. Expend energy raising temperatures to 85°F or supplement LED with IR or in my case CMH.

Depends on the environment. Some people save energy running at 85F because they don't have to use energy to cool the grow environment down like you would with HPS.
 

indagroove

Well-known member
Veteran
700-780 is a pretty huge range. Not all far red is the same. You do not want to be supplementing 730 nm (the wavelength that all light makers put in as far red.... smfh) into your general light regime, as it will increase inter nodal elongantion, look up plant shade avoidance response if you dont feel like believing me. (not talking about putting flowering plants to sleep or whatever.)

Yes, I am aware of the shade avoidance theory. I've done my research. Depending on the phase of the grow cycle and the specific plant genetics, inter-nodal elongation isn't always a bad thing. In fact if you time it right, it can equal increased yield. I wonder what wavelength for far red you are suggesting, if it's not 730nm. Personally I ran my 730nm for the first half of the flowering cycle, and didn't have undesired elongation. I did switch to only far red at start/end of day, for the second half of floweriung cycle, to avoid fluffy buds.
 

eyesdownchronic

Active member
Yes, I am aware of the shade avoidance theory. I've done my research. Depending on the phase of the grow cycle and the specific plant genetics, inter-nodal elongation isn't always a bad thing. In fact if you time it right, it can equal increased yield. I wonder what wavelength for far red you are suggesting, if it's not 730nm. Personally I ran my 730nm for the first half of the flowering cycle, and didn't have undesired elongation. I did switch to only far red at start/end of day, for the second half of floweriung cycle, to avoid fluffy buds.


My bad, reread my comment and didnt realize it came off as condescending,so I apologize. And I think really any fr wavelength outside of 730 would be better for growth. Im pretty interested that you didnt notice much stretch though. Are you running a light that has 660 nm red supplementation as well?
 

indagroove

Well-known member
Veteran
My bad, reread my comment and didnt realize it came off as condescending,so I apologize. And I think really any fr wavelength outside of 730 would be better for growth. Im pretty interested that you didnt notice much stretch though. Are you running a light that has 660 nm red supplementation as well?

Yeah I run a LED lamp with 3500k white diodes plus 630nm and 660nm reds. Admittedly this is the my first run with this strain, but here they were at 28 days flowering, when I stopped far red during the whole lights on cycle..

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This is the spectrum of my main lighting:

EliteSpectrum_f561661f-c2e5-48e7-afa8-e1c56a3348e3_1024x1024.jpg
 
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